Creality 3D 42-34 Stepper Motor with Round Shaft. Used for the Z-axis on the Ender-5. The table bellow shows which size stepper motor that fits which axis on the different Creality 3D models: X-axis Y-axis Z-axis Extruder CR-10 Mini 42-34 42-34 42-34 42-40 CR-10S (300) 42-40 42-40 42-34 42-40 CR-10-S4 (400) 42-40 42-60 42-34 42-40 CR-10-S5 (500) 42-40 42-60 42-34 42-40 CR-10S Pro 42-40 42-40 42-34 42-40 CR-X 42-40 42-40 42-34 42-40 CR20 Pro 42-34 42-34 42-34 42-40 Ender-3 42-34 42-34 42-34 42-40 Ender-3 Pro 42-34 42-34 42-34 42-40 Ender-5 42-34 42-40 (dual shaft) 42-34 (round shaft) 42-40 Ender 3 Max 42-34 (round shaft) 42-34 (round shaft)